From patchwork Fri Apr 9 13:40:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aswath Govindraju X-Patchwork-Id: 418988 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4264EC43460 for ; Fri, 9 Apr 2021 13:41:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 21BC1610D1 for ; Fri, 9 Apr 2021 13:41:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232615AbhDINll (ORCPT ); Fri, 9 Apr 2021 09:41:41 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:58096 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231402AbhDINlk (ORCPT ); Fri, 9 Apr 2021 09:41:40 -0400 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 139Df4ZH113099; Fri, 9 Apr 2021 08:41:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1617975664; bh=+hrfoKJ5dxbZo5OQLdyaXN4aZTv5QQgu1FvsD/VAlxs=; h=From:To:CC:Subject:Date; b=XU0/teXZMOTlXq58jED0E/yqtBw6uSrLZCuHTs85bfy2EmkecWtlzjziD4ScbPgx6 RedcJSsXSH+LzdGuXfxDoHcfEg8+wnZ1SxoD7qm0Dch13kmRCyI+9bWVG/WYI8exK5 LEFynr5PFjBoFcG5dhfxxrY9fEuzemgKrEt3862E= Received: from DFLE109.ent.ti.com (dfle109.ent.ti.com [10.64.6.30]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 139Df4Qw074014 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 9 Apr 2021 08:41:04 -0500 Received: from DFLE107.ent.ti.com (10.64.6.28) by DFLE109.ent.ti.com (10.64.6.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Fri, 9 Apr 2021 08:41:04 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DFLE107.ent.ti.com (10.64.6.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2 via Frontend Transport; Fri, 9 Apr 2021 08:41:04 -0500 Received: from gsaswath-HP-ProBook-640-G5.dal.design.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 139DewmZ029277; Fri, 9 Apr 2021 08:40:59 -0500 From: Aswath Govindraju CC: Vignesh Raghavendra , Kishon Vijay Abraham I , Lokesh Vutla , Grygorii Strashko , Aswath Govindraju , Chandrasekar Ramakrishnan , Wolfgang Grandegger , Marc Kleine-Budde , "David S. Miller" , Jakub Kicinski , Rob Herring , Vinod Koul , Sriram Dash , , , , , Subject: [PATCH 0/4] CAN TRANSCEIVER: Add support for CAN transceivers Date: Fri, 9 Apr 2021 19:10:50 +0530 Message-ID: <20210409134056.18740-1-a-govindraju@ti.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The following series of patches add support for CAN transceivers. TCAN1042 has a standby signal that needs to be pulled high for sending/receiving messages[1]. TCAN1043 has a enable signal along with standby signal that needs to be pulled up for sending/receiving messages[2], and other combinations of the two lines can be used to put the transceiver in different states to reduce power consumption. On boards like the AM654-idk and J721e-evm these signals are controlled using gpios. Patch 1 models the transceiver as a phy device tree node with properties for max bit rate supported, gpio properties for indicating gpio pin numbers to which standby and enable signals are connected. Patch 2 adds a generic driver to support CAN transceivers. Patches 3 & 4 add support for implementing the transceiver as a phy of m_can_platform driver. Aswath Govindraju (2): dt-bindings: phy: Add binding for TI TCAN104x CAN transceivers phy: phy-can-transceiver: Add support for generic CAN transceiver driver Faiz Abbas (2): dt-bindings: net: can: Document transceiver implementation as phy can: m_can_platform: Add support for transceiver as phy .../bindings/net/can/bosch,m_can.yaml | 6 + .../bindings/phy/ti,tcan104x-can.yaml | 56 +++++++ drivers/net/can/m_can/m_can_platform.c | 25 ++++ drivers/phy/Kconfig | 9 ++ drivers/phy/Makefile | 1 + drivers/phy/phy-can-transceiver.c | 140 ++++++++++++++++++ 6 files changed, 237 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/ti,tcan104x-can.yaml create mode 100644 drivers/phy/phy-can-transceiver.c